水彩颜料反射比的测定与分析

Measurement and Analysis of Reflectance for Watercolor Pigment

传统的图像复制方法所记录的图像难于在不同的照明环境下真实再现原物的颜色,因此需要一个可以重建目标物体表面上各点光谱反射比的方法,来提高颜色复制的真实性。利用Eye-One Pro分光光度仪测量出所选12种水彩颜料的反射比,进而求解色度空间中不同颜色的三刺激值,并计算出同色颜料在不同纸张上的色差,从而建立颜料光谱特征的数据库。

It is difficult to reproduce the original color of targeted objects actually in different il- luminating environment using the traditional methods. So we need a method which can recon- struct the reflectance about every point on the surface of targets. Consequently, this work can improve the authenticity of color reproduction. During the process of experiment, we used the Eye-One Pro spectrophotometer to measure the reflectance of 12 kinds of watercolor. Thus, we solved the tristimulus values of different color in color space, and calculated the chromatic aber- ration of watercolor pigments for same color on different papers, finally, established the charac- teristic database of pigmentary spectrum.